@pepper2000 it appears some terrains and features aren't used by buildings - that is no building requires those features in vicinity.
You need PPIO to see what buildings are unlocked if you have terrains/feature in vicinity.
Features:
Brown Dwarf, Blue Giant and Blue Dwarf
Terrains:
Branespace, Hyperspace.
Green Mars, Green Moon.
Red Giant.
Lava/MethaneSubsurface Ocean.
Martian/Venus terrains.
Lunar Dome and Highland (Mare/Regolith/Rille are needed in vicinity for Moon Base though).
Cislunar Space, Orbit.
You need PPIO to see what buildings are unlocked if you have terrains/feature in vicinity.
Features:
Brown Dwarf, Blue Giant and Blue Dwarf
Terrains:
Branespace, Hyperspace.
Green Mars, Green Moon.
Red Giant.
Lava/MethaneSubsurface Ocean.
Martian/Venus terrains.
Lunar Dome and Highland (Mare/Regolith/Rille are needed in vicinity for Moon Base though).
Cislunar Space, Orbit.